[RESOLVED] [2008] Print out font's and colours with richtextbox

[kake_fisk]

I can't find out how to print out font's and colours with the richtextbox.
I can just print out small black font...
I use the font dialog box.

Can anyone help me?

[.paul.]

heres an extended richtextbox control with rtf printing support built in.

Imports System
Imports System.Windows.Forms
Imports System.Drawing
Imports System.Runtime.InteropServices
Imports System.Drawing.Printing
 
 
Public Class myRichTextBoxEx
    Inherits RichTextBox
 
    <StructLayout(LayoutKind.Sequential)> _
        Private Structure STRUCT_RECT
        Public left As Int32
        Public top As Int32
        Public right As Int32
        Public bottom As Int32
    End Structure
 
    <StructLayout(LayoutKind.Sequential)> _
    Private Structure STRUCT_CHARRANGE
        Public cpMin As Int32
        Public cpMax As Int32
    End Structure
 
    <StructLayout(LayoutKind.Sequential)> _
    Private Structure STRUCT_FORMATRANGE
        Public hdc As IntPtr
        Public hdcTarget As IntPtr
        Public rc As STRUCT_RECT
        Public rcPage As STRUCT_RECT
        Public chrg As STRUCT_CHARRANGE
    End Structure
 
    <StructLayout(LayoutKind.Sequential)> _
    Private Structure STRUCT_CHARFORMAT
        Public cbSize As Integer
        Public dwMask As UInt32
        Public dwEffects As UInt32
        Public yHeight As Int32
        Public yOffset As Int32
        Public crTextColor As Int32
        Public bCharSet As Byte
        Public bPitchAndFamily As Byte
        <MarshalAs(UnmanagedType.ByValArray, SizeConst:=32)> _
        Public szFaceName As Char()
    End Structure
 
    <DllImport("user32.dll")> _
    Private Shared Function SendMessage(ByVal hWnd As IntPtr, _
                                    ByVal msg As Int32, _
                                    ByVal wParam As Int32, _
                                    ByVal lParam As IntPtr) As Int32
    End Function
 
    Private Const WM_USER As Int32 = &H400&
    Private Const EM_FORMATRANGE As Int32 = WM_USER + 57
 
    ' Calculate or render the contents of our RichTextBox for printing
    '
    ' Parameter "measureOnly": If true, only the calculation is performed,
    '                          otherwise the text is rendered as well
    ' Parameter "e": The PrintPageEventArgs object from the PrintPage event
    ' Parameter "charFrom": Index of first character to be printed
    ' Parameter "charTo": Index of last character to be printed
    ' Return value: (Index of last character that fitted on the page) + 1
    Public Function FormatRange(ByVal measureOnly As Boolean, _
                                ByVal e As PrintPageEventArgs, _
                                ByVal charFrom As Integer, _
                                ByVal charTo As Integer) As Integer
        ' Specify which characters to print
        Dim cr As STRUCT_CHARRANGE
        cr.cpMin = charFrom
        cr.cpMax = charTo
 
        ' Specify the area inside page margins
        Dim rc As STRUCT_RECT
        rc.top = HundredthInchToTwips(e.MarginBounds.Top)
        rc.bottom = HundredthInchToTwips(e.MarginBounds.Bottom)
        rc.left = HundredthInchToTwips(e.MarginBounds.Left)
        rc.right = HundredthInchToTwips(e.MarginBounds.Right)
 
        ' Specify the page area
        Dim rcPage As STRUCT_RECT
        rcPage.top = HundredthInchToTwips(e.PageBounds.Top)
        rcPage.bottom = HundredthInchToTwips(e.PageBounds.Bottom)
        rcPage.left = HundredthInchToTwips(e.PageBounds.Left)
        rcPage.right = HundredthInchToTwips(e.PageBounds.Right)
 
        ' Get device context of output device
        Dim hdc As IntPtr
        hdc = e.Graphics.GetHdc()
 
        ' Fill in the FORMATRANGE structure
        Dim fr As STRUCT_FORMATRANGE
        fr.chrg = cr
        fr.hdc = hdc
        fr.hdcTarget = hdc
        fr.rc = rc
        fr.rcPage = rcPage
 
        ' Non-Zero wParam means render, Zero means measure
        Dim wParam As Int32
        If measureOnly Then
            wParam = 0
        Else
            wParam = 1
        End If
 
        ' Allocate memory for the FORMATRANGE struct and
        ' copy the contents of our struct to this memory
        Dim lParam As IntPtr
        lParam = Marshal.AllocCoTaskMem(Marshal.SizeOf(fr))
        Marshal.StructureToPtr(fr, lParam, False)
 
        ' Send the actual Win32 message
        Dim res As Integer
        res = SendMessage(Handle, EM_FORMATRANGE, wParam, lParam)
 
        ' Free allocated memory
        Marshal.FreeCoTaskMem(lParam)
 
        ' and release the device context
        e.Graphics.ReleaseHdc(hdc)
 
        Return res
    End Function
 
    ' Convert between 1/100 inch (unit used by the .NET framework)
    ' and twips (1/1440 inch, used by Win32 API calls)
    '
    ' Parameter "n": Value in 1/100 inch
    ' Return value: Value in twips
    Private Function HundredthInchToTwips(ByVal n As Integer) As Int32
        Return Convert.ToInt32(n * 14.4)
    End Function
 
    ' Free cached data from rich edit control after printing
    Public Sub FormatRangeDone()
        Dim lParam As New IntPtr(0)
        SendMessage(Handle, EM_FORMATRANGE, 0, lParam)
    End Sub
 
    Public Sub PrintRichTextContents()
        Dim printDoc As New PrintDocument()
        AddHandler printDoc.BeginPrint, AddressOf printDoc_BeginPrint
        AddHandler printDoc.PrintPage, AddressOf printDoc_PrintPage
        AddHandler printDoc.EndPrint, AddressOf printDoc_EndPrint
        ' Start printing process
        printDoc.Print()
    End Sub
 
    ' variable to trace text to print for pagination
    Private m_nFirstCharOnPage As Integer
 
    Private Sub printDoc_BeginPrint(ByVal sender As Object, _
        ByVal e As System.Drawing.Printing.PrintEventArgs)
        ' Start at the beginning of the text
        m_nFirstCharOnPage = 0
    End Sub
 
    Private Sub printDoc_PrintPage(ByVal sender As Object, _
        ByVal e As System.Drawing.Printing.PrintPageEventArgs)
        ' To print the boundaries of the current page margins
        ' uncomment the next line:
        ' e.Graphics.DrawRectangle(System.Drawing.Pens.Blue, e.MarginBounds)
 
        ' make the RichTextBoxEx calculate and render as much text as will
        ' fit on the page and remember the last character printed for the
        ' beginning of the next page
        m_nFirstCharOnPage = FormatRange(False, _
        e, _
        m_nFirstCharOnPage, _
        MyBase.TextLength)
 
        ' check if there are more pages to print
        If (m_nFirstCharOnPage < MyBase.TextLength) Then
            e.HasMorePages = True
        Else
            e.HasMorePages = False
        End If
    End Sub
 
    Private Sub printDoc_EndPrint(ByVal sender As Object, _
        ByVal e As System.Drawing.Printing.PrintEventArgs)
        ' Clean up cached information
        FormatRangeDone()
    End Sub
 
End Class

to print the text from the extended richtextbox:

Public Class Form1
 
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        MyRichTextBoxEx.PrintRichTextContents()
    End Sub
 
End Class

[kokloong]

MyRichTextBoxEx.PrintRichTextContents()

for tis code i gt prob.. it show reference to a non-shared member required an object reference..

[jmcilhinney]

MyRichTextBoxEx.PrintRichTextContents()

for tis code i gt prob.. it show reference to a non-shared member required an object reference..

That was just an EXAMPLE. You're supposed to refer to YOUR instance of that class. Have you added one to your form? That is the one you call PrintRichTextContents on.

[kokloong]

That was just an EXAMPLE. You're supposed to refer to YOUR instance of that class. Have you added one to your form? That is the one you call PrintRichTextContents on.

i din understand that's y i ask.. nw i supposed to refer to my instance of which class? i need 2 add wat in my form as well? can guide me? thx..

[jbmckim]

This is a pretty old thread. But never the less, I was curious if there's a simple way to hook this up to PrinterDialog? I've read and read and read on these but frankly I'm still confused.

Thanks.

[jbmckim]

Why is it that all you have to do is post something or ask someone and suddenly the answer drops on you on your way to get coffee?

The following allows me to use the Printdialog stuff with this class. Note that MyForm1 is whatever Form owns Printdialog1. Clearly, you could code all this without forms as well.

My changes are in bold below.

Public Sub PrintRichTextContents()
        Dim printDoc As New PrintDocument()
        AddHandler printDoc.BeginPrint, AddressOf printDoc_BeginPrint
        AddHandler printDoc.PrintPage, AddressOf printDoc_PrintPage
        AddHandler printDoc.EndPrint, AddressOf printDoc_EndPrint
        MyForm1.PrintDialog1.Document = printDoc
        MyForm1.PrintDialog1.ShowDialog()
        ' Start printing process
        printDoc.Print()
    End Sub

[RentalPoint]

Paul, I see you haven't posted to this for some time, but thought it was easier to ask under your posting of the code. I'm having a bit of a problem with this. If I print a full page document and then come back later and print a half page, the bottom part of the first document prints on the half page document.

Basically, I have a form that has an rtfBox on it. I format the rtfBox the way I want. Then I set the myRichTextBoxEx1.Rtf = rtfBox.Rtf and print it. Under debug, I can see that both the rtfBox and the myRichTextBoxEx1 only has the half page of information, but what gets sent to the print is a full page. I unload the form between prints. Is there something else that needs to get cleared or initialized between prints?
Thanks

[.paul.]

I don't remember the full code + what it does or doesn't do.
Start a new thread, + post the code you're using with your question.